Answer:
It suggests that many families in the United States are immigrants or have roots of other nations. It is very diverse.
Explanation:
This is in third person PoV (likely omniscient to be precise). This is known because the readers know almost every thought and emotion of each character.
Examples of this are provided throughout. Just find quotes about the character's thoughts/feelings. :)
Cyclist is to ride as pedestrian is to walk. You see, if you are a cyclist you would be riding a bike. And if you were a pedestrian you'd be walking.
Elizabeth is anything but bitter and sniveling. She is solicitous of her husband, John, as well as deeply caring and sensitive, if still hurting from what has happened to her
Sentiences 3 and 8 because they express emotional thought other than fact. For sentence three, using "terrible waste" can be debateable and shows more of an opinion. And sentence 8, by using "shouldn't" showing its still a posssiby something can or can not happen.